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Simplifying 4a2 + 7b2 + 3a2 + 18 = 0 Reorder the terms: 18 + 4a2 + 3a2 + 7b2 = 0 Combine like terms: 4a2 + 3a2 = 7a2 18 + 7a2 + 7b2 = 0 Solving 18 + 7a2 + 7b2 = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-18' to each side of the equation. 18 + 7a2 + -18 + 7b2 = 0 + -18 Reorder the terms: 18 + -18 + 7a2 + 7b2 = 0 + -18 Combine like terms: 18 + -18 = 0 0 + 7a2 + 7b2 = 0 + -18 7a2 + 7b2 = 0 + -18 Combine like terms: 0 + -18 = -18 7a2 + 7b2 = -18 Add '-7b2' to each side of the equation. 7a2 + 7b2 + -7b2 = -18 + -7b2 Combine like terms: 7b2 + -7b2 = 0 7a2 + 0 = -18 + -7b2 7a2 = -18 + -7b2 Divide each side by '7'. a2 = -2.571428571 + -1b2 Simplifying a2 = -2.571428571 + -1b2 Reorder the terms: 2.571428571 + a2 + b2 = -2.571428571 + -1b2 + 2.571428571 + b2 Reorder the terms: 2.571428571 + a2 + b2 = -2.571428571 + 2.571428571 + -1b2 + b2 Combine like terms: -2.571428571 + 2.571428571 = 0.000000000 2.571428571 + a2 + b2 = 0.000000000 + -1b2 + b2 2.571428571 + a2 + b2 = -1b2 + b2 Combine like terms: -1b2 + b2 = 0 2.571428571 + a2 + b2 = 0 The solution to this equation could not be determined.
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